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package br.uff.javaavancado.filtro;

import br.uff.javaavancado.controller.LoginController;
import java.io.*;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Mário
 */
public class LogadoFilter implements Filter {

    public LogadoFilter() {
    }

    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain)
            throws IOException, ServletException {

        HttpSession session = ((HttpServletRequest)request).getSession();
        
        LoginController sessao = (LoginController) session.getAttribute("LoginController");
        
        if(sessao==null || !sessao.isLogado()) {
            ((HttpServletResponse)response).sendRedirect(((HttpServletRequest)request).getContextPath() + "/home.java");
        }
        
            chain.doFilter(request, response);
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {
    }

    @Override
    public void destroy() {
    }
}
